Improvement in wood-planing machines



H. M. WILCOX.

WOOD PLANING MACHINE. No.182,782. Patented 0ct.3.1876.

' 17% /Mw f N. PETERS, FHOTO-UTHOGRAPHEE WASHINGTON. D. C.

UNITED STATES PATENT OFFICE.

HARLOW M. WILOOX, OF CHICAGO, ILLINOIS;

IMFROVEMENT IN WOOD-PLANING MACHINES.

Specification forming part of Letters Patent No 182,782, dated October3, 1876 application filed July 20, 1876.

To all whom it may concerni Be it known that I, HARLOW M. WILGOX, ofChicago, in the county of Cook and State of Illinois, have invented anew and useful Improvement in Wood-Planing Machines, of

V which the following is a specification:

ment to accommodate itself to lumber of different thicknesses. Theobject is to hold a thin board to the bed of a planer while a thickerboard is'approaching the knives. Second, in the novel construction ofthe housing of a delivery-roller, whereby thelatter is constantlylubricated, as the whole is to be herereinafter fully described andshown.

In the drawings, Figure 1 is a plan or top v View of that part of aplaning-machine which contains the bed over which the lumber passes, thecutter-head, and my improvement. Fig. 2 is a transverse sectionalelevation of the same, taken on line 4, Fig. 1, looking in the directionindicated by dart Z. Fig. 3 is an elevation of one side of the machinewith cutter-head, rollers, and rock pressure bar removed, looking alsoin the direction indicated by dart Z; Fig. 4., a broken elevation of therock pressure-bar and its roller; Fig. 5, a broken elevation of thedelivery-roller and its housing.

A represents the bed; B, the cutter-head of an ordinary planing-machine,and O a board under the cutter -head. G represents the ordinary sideframes of the machine. I represents the delivery-roller, which hasbearings in slotted frames J with the ordinary set-screws KK and springsto be placed in the frames to give the roller a yielding movement, whenlumber is passing under it.

The housing above the roller I in section is shown at L M N, and betweenthe parts L M is a horizontal slot, which communicates with the roller Iby means of aslot through the part M, as shown at Fig. 2. Packing isplaced in the slot between M N, so as to lie on the roller I, and isoiled by means of any necessary number of holes, 0, in the part N, thepacking being placed in and removed from the slot without removing anypart of the housing.

D B F represents the rock pressure-bar carrying the roller P. This barat D has a bearing onthe board 0, and its heel is inclined up and backto admit of a thicker board passing under it, and at each end it has alower bearing, F,-in the slot of an inclined frame, H, and an upperbearing, R, at each end, which is fitted in a rubber ring, S, alsoplaced in the slot in frame H.

The bearing F in practice is, in horizontal measurement, placed at abouthalf the distance between the point D of the pressurebar and the rollerP, thereby permitting the bar to rock or partially turn when a' boardthicker than the one being planed is passing under the roller P.

In practice, two springs, T, are employed in the frames H. to hold therock pressure-bar to its work, weights being substituted for thesprings, if desired.

If a following board should be but a little thicker than the one beingplaned, the rubber rings S will yield enough to allow it to pass underthe roller without raising the pressurebar up the inclined slots in theframes H H, but a thicker board will so cause the bar to rise; but ineither case the bar will turn enough to keep the proper pressure on theboard being planed at the point D.

I claim and desire to secure by Letters Patenta 1. The rock pressure-barD, hung at two points at each end, in combination with the bearing R andrubber rings S, as set forth.

2. The housing N M, provided with a horizontal slot to receivelubricating-packing, which communicates with the roller I by means of anopening through the part M, as and for the purpose described.

' HARLOW M. WILOOX.

Witnesses:

O. H. Amx, G. L. GHArIN.

